Kirsten,
Of my six cats, Georgia has the barometer to beat all barometers. Her nose gets bubblegum pink, nearly fushcia, when she is excited. (normally, a little love bite immediately follows, so, I am glad for the warning). Georgie is also warmer than the other kitties....now, I dont know when I realized this (maybe five seconds ago)...but, when I read your post, I immediately thougth, "well, that is like Georgie"...so, maybe like people, some kitties are warmer?